In order to simplify the next couple of patches, extract the
lazy_coherency optimisation our of the engine->get_seqno() vfunc into
its own callback.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 10 ++++-----
drivers/gpu/drm/i915/i915_drv.h | 12 ++++++----
drivers/gpu/drm/i915/i915_gpu_error.c | 2 +-
drivers/gpu/drm/i915/i915_irq.c | 4 ++--
drivers/gpu/drm/i915/i915_trace.h | 2 +-
drivers/gpu/drm/i915/intel_lrc.c | 39 +++++++++++++--------------------
drivers/gpu/drm/i915/intel_ringbuffer.c | 34 ++++++++++++++--------------
drivers/gpu/drm/i915/intel_ringbuffer.h | 4 ++--
8 files changed, 51 insertions(+), 56 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 8458447ddc17..1e8aa897673a 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -600,7 +600,7 @@ static int i915_gem_pageflip_info(struct seq_file *m, void *data)
ring->name,
i915_gem_request_get_seqno(work->flip_queued_req),
dev_priv->next_seqno,
- ring->get_seqno(ring, true),
+ ring->get_seqno(ring),
i915_gem_request_completed(work->flip_queued_req, true));
} else
seq_printf(m, "Flip not associated with any ring\n");
@@ -730,10 +730,8 @@ static int i915_gem_request_info(struct seq_file *m, void *data)
static void i915_ring_seqno_info(struct seq_file *m,
struct intel_engine_cs *ring)
{
- if (ring->get_seqno) {
- seq_printf(m, "Current sequence (%s): %x\n",
- ring->name, ring->get_seqno(ring, false));
- }
+ seq_printf(m, "Current sequence (%s): %x\n",
+ ring->name, ring->get_seqno(ring));
}
static int i915_gem_seqno_info(struct seq_file *m, void *data)
@@ -1342,7 +1340,7 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused)
intel_runtime_pm_get(dev_priv);
for_each_ring(ring, dev_priv, i) {
- seqno[i] = ring->get_seqno(ring, false);
+ seqno[i] = ring->get_seqno(ring);
acthd[i] = intel_ring_get_active_head(ring);
}
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 782d08ab6264..a9c1785ac08c 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2988,15 +2988,19 @@ i915_seqno_passed(uint32_t seq1, uint32_t seq2)
static inline bool i915_gem_request_started(struct drm_i915_gem_request *req,
bool lazy_coherency)
{
- u32 seqno = req->ring->get_seqno(req->ring, lazy_coherency);
- return i915_seqno_passed(seqno, req->previous_seqno);
+ if (!lazy_coherency && req->ring->seqno_barrier)
+ req->ring->seqno_barrier(req->ring);
+ return i915_seqno_passed(req->ring->get_seqno(req->ring),
+ req->previous_seqno);
}
static inline bool i915_gem_request_completed(struct drm_i915_gem_request *req,
bool lazy_coherency)
{
- u32 seqno = req->ring->get_seqno(req->ring, lazy_coherency);
- return i915_seqno_passed(seqno, req->seqno);
+ if (!lazy_coherency && req->ring->seqno_barrier)
+ req->ring->seqno_barrier(req->ring);
+ return i915_seqno_passed(req->ring->get_seqno(req->ring),
+ req->seqno);
}
int __must_check i915_gem_get_seqno(struct drm_device *dev, u32 *seqno);
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index d1df405b905c..7a427240c813 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -903,8 +903,8 @@ static void i915_record_ring_state(struct drm_device *dev,
ering->waiting = READ_ONCE(dev_priv->breadcrumbs.engine[ring->id].first);
ering->instpm = I915_READ(RING_INSTPM(ring->mmio_base));
- ering->seqno = ring->get_seqno(ring, false);
ering->acthd = intel_ring_get_active_head(ring);
+ ering->seqno = ring->get_seqno(ring);
ering->start = I915_READ_START(ring);
ering->head = I915_READ_HEAD(ring);
ering->tail = I915_READ_TAIL(ring);
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 0c2390476bdb..43078e09e1f0 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2871,7 +2871,7 @@ static int semaphore_passed(struct intel_engine_cs *ring)
if (signaller->hangcheck.deadlock >= I915_NUM_RINGS)
return -1;
- if (i915_seqno_passed(signaller->get_seqno(signaller, false), seqno))
+ if (i915_seqno_passed(signaller->get_seqno(signaller), seqno))
return 1;
/* cursory check for an unkickable deadlock */
@@ -2974,8 +2974,8 @@ static void i915_hangcheck_elapsed(struct work_struct *work)
semaphore_clear_deadlocks(dev_priv);
- seqno = ring->get_seqno(ring, false);
acthd = intel_ring_get_active_head(ring);
+ seqno = ring->get_seqno(ring);
if (ring->hangcheck.seqno == seqno) {
if (ring_idle(ring, seqno)) {
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index 52b2d409945d..cfb5f78a6e84 100644
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -573,7 +573,7 @@ TRACE_EVENT(i915_gem_request_notify,
TP_fast_assign(
__entry->dev = ring->dev->primary->index;
__entry->ring = ring->id;
- __entry->seqno = ring->get_seqno(ring, false);
+ __entry->seqno = ring->get_seqno(ring);
),
TP_printk("dev=%u, ring=%u, seqno=%u",
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 604c081b0a0f..fef97dc8e02d 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1755,7 +1755,7 @@ static int gen8_emit_flush_render(struct drm_i915_gem_request *request,
return 0;
}
-static u32 gen8_get_seqno(struct intel_engine_cs *ring, bool lazy_coherency)
+static u32 gen8_get_seqno(struct intel_engine_cs *ring)
{
return intel_read_status_page(ring, I915_GEM_HWS_INDEX);
}
@@ -1765,9 +1765,8 @@ static void gen8_set_seqno(struct intel_engine_cs *ring, u32 seqno)
intel_write_status_page(ring, I915_GEM_HWS_INDEX, seqno);
}
-static u32 bxt_a_get_seqno(struct intel_engine_cs *ring, bool lazy_coherency)
+static void bxt_seqno_barrier(struct intel_engine_cs *ring)
{
-
/*
* On BXT A steppings there is a HW coherency issue whereby the
* MI_STORE_DATA_IMM storing the completed request's seqno
@@ -1778,11 +1777,7 @@ static u32 bxt_a_get_seqno(struct intel_engine_cs *ring, bool lazy_coherency)
* bxt_a_set_seqno(), where we also do a clflush after the write. So
* this clflush in practice becomes an invalidate operation.
*/
-
- if (!lazy_coherency)
- intel_flush_status_page(ring, I915_GEM_HWS_INDEX);
-
- return intel_read_status_page(ring, I915_GEM_HWS_INDEX);
+ intel_flush_status_page(ring, I915_GEM_HWS_INDEX);
}
static void bxt_a_set_seqno(struct intel_engine_cs *ring, u32 seqno)
@@ -1977,12 +1972,11 @@ static int logical_render_ring_init(struct drm_device *dev)
ring->init_hw = gen8_init_render_ring;
ring->init_context = gen8_init_rcs_context;
ring->cleanup = intel_fini_pipe_control;
+ ring->get_seqno = gen8_get_seqno;
+ ring->set_seqno = gen8_set_seqno;
if (IS_BXT_REVID(dev, 0, BXT_REVID_A1)) {
- ring->get_seqno = bxt_a_get_seqno;
+ ring->seqno_barrier = bxt_seqno_barrier;
ring->set_seqno = bxt_a_set_seqno;
- } else {
- ring->get_seqno = gen8_get_seqno;
- ring->set_seqno = gen8_set_seqno;
}
ring->emit_request = gen8_emit_request;
ring->emit_flush = gen8_emit_flush_render;
@@ -2029,12 +2023,11 @@ static int logical_bsd_ring_init(struct drm_device *dev)
GT_CONTEXT_SWITCH_INTERRUPT << GEN8_VCS1_IRQ_SHIFT;
ring->init_hw = gen8_init_common_ring;
+ ring->get_seqno = gen8_get_seqno;
+ ring->set_seqno = gen8_set_seqno;
if (IS_BXT_REVID(dev, 0, BXT_REVID_A1)) {
- ring->get_seqno = bxt_a_get_seqno;
+ ring->seqno_barrier = bxt_seqno_barrier;
ring->set_seqno = bxt_a_set_seqno;
- } else {
- ring->get_seqno = gen8_get_seqno;
- ring->set_seqno = gen8_set_seqno;
}
ring->emit_request = gen8_emit_request;
ring->emit_flush = gen8_emit_flush;
@@ -2084,12 +2077,11 @@ static int logical_blt_ring_init(struct drm_device *dev)
GT_CONTEXT_SWITCH_INTERRUPT << GEN8_BCS_IRQ_SHIFT;
ring->init_hw = gen8_init_common_ring;
+ ring->get_seqno = gen8_get_seqno;
+ ring->set_seqno = gen8_set_seqno;
if (IS_BXT_REVID(dev, 0, BXT_REVID_A1)) {
- ring->get_seqno = bxt_a_get_seqno;
+ ring->seqno_barrier = bxt_seqno_barrier;
ring->set_seqno = bxt_a_set_seqno;
- } else {
- ring->get_seqno = gen8_get_seqno;
- ring->set_seqno = gen8_set_seqno;
}
ring->emit_request = gen8_emit_request;
ring->emit_flush = gen8_emit_flush;
@@ -2114,12 +2106,11 @@ static int logical_vebox_ring_init(struct drm_device *dev)
GT_CONTEXT_SWITCH_INTERRUPT << GEN8_VECS_IRQ_SHIFT;
ring->init_hw = gen8_init_common_ring;
+ ring->get_seqno = gen8_get_seqno;
+ ring->set_seqno = gen8_set_seqno;
if (IS_BXT_REVID(dev, 0, BXT_REVID_A1)) {
- ring->get_seqno = bxt_a_get_seqno;
+ ring->seqno_barrier = bxt_seqno_barrier;
ring->set_seqno = bxt_a_set_seqno;
- } else {
- ring->get_seqno = gen8_get_seqno;
- ring->set_seqno = gen8_set_seqno;
}
ring->emit_request = gen8_emit_request;
ring->emit_flush = gen8_emit_flush;
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 5a5a7195dd54..98de72177d12 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1501,22 +1501,18 @@ pc_render_add_request(struct drm_i915_gem_request *req)
return 0;
}
-static u32
-gen6_ring_get_seqno(struct intel_engine_cs *ring, bool lazy_coherency)
+static void
+gen6_seqno_barrier(struct intel_engine_cs *ring)
{
/* Workaround to force correct ordering between irq and seqno writes on
* ivb (and maybe also on snb) by reading from a CS register (like
* ACTHD) before reading the status page. */
- if (!lazy_coherency) {
- struct drm_i915_private *dev_priv = ring->dev->dev_private;
- POSTING_READ(RING_ACTHD(ring->mmio_base));
- }
-
- return intel_read_status_page(ring, I915_GEM_HWS_INDEX);
+ struct drm_i915_private *dev_priv = ring->i915;
+ POSTING_READ(RING_ACTHD(ring->mmio_base));
}
static u32
-ring_get_seqno(struct intel_engine_cs *ring, bool lazy_coherency)
+ring_get_seqno(struct intel_engine_cs *ring)
{
return intel_read_status_page(ring, I915_GEM_HWS_INDEX);
}
@@ -1528,7 +1524,7 @@ ring_set_seqno(struct intel_engine_cs *ring, u32 seqno)
}
static u32
-pc_render_get_seqno(struct intel_engine_cs *ring, bool lazy_coherency)
+pc_render_get_seqno(struct intel_engine_cs *ring)
{
return ring->scratch.cpu_page[0];
}
@@ -2703,7 +2699,8 @@ int intel_init_render_ring_buffer(struct drm_device *dev)
ring->irq_get = gen8_ring_get_irq;
ring->irq_put = gen8_ring_put_irq;
ring->irq_enable_mask = GT_RENDER_USER_INTERRUPT;
- ring->get_seqno = gen6_ring_get_seqno;
+ ring->seqno_barrier = gen6_seqno_barrier;
+ ring->get_seqno = ring_get_seqno;
ring->set_seqno = ring_set_seqno;
if (i915_semaphore_is_enabled(dev)) {
WARN_ON(!dev_priv->semaphore_obj);
@@ -2720,7 +2717,8 @@ int intel_init_render_ring_buffer(struct drm_device *dev)
ring->irq_get = gen6_ring_get_irq;
ring->irq_put = gen6_ring_put_irq;
ring->irq_enable_mask = GT_RENDER_USER_INTERRUPT;
- ring->get_seqno = gen6_ring_get_seqno;
+ ring->seqno_barrier = gen6_seqno_barrier;
+ ring->get_seqno = ring_get_seqno;
ring->set_seqno = ring_set_seqno;
if (i915_semaphore_is_enabled(dev)) {
ring->semaphore.sync_to = gen6_ring_sync;
@@ -2834,7 +2832,8 @@ int intel_init_bsd_ring_buffer(struct drm_device *dev)
ring->write_tail = gen6_bsd_ring_write_tail;
ring->flush = gen6_bsd_ring_flush;
ring->add_request = gen6_add_request;
- ring->get_seqno = gen6_ring_get_seqno;
+ ring->seqno_barrier = gen6_seqno_barrier;
+ ring->get_seqno = ring_get_seqno;
ring->set_seqno = ring_set_seqno;
if (INTEL_INFO(dev)->gen >= 8) {
ring->irq_enable_mask =
@@ -2906,7 +2905,8 @@ int intel_init_bsd2_ring_buffer(struct drm_device *dev)
ring->mmio_base = GEN8_BSD2_RING_BASE;
ring->flush = gen6_bsd_ring_flush;
ring->add_request = gen6_add_request;
- ring->get_seqno = gen6_ring_get_seqno;
+ ring->seqno_barrier = gen6_seqno_barrier;
+ ring->get_seqno = ring_get_seqno;
ring->set_seqno = ring_set_seqno;
ring->irq_enable_mask =
GT_RENDER_USER_INTERRUPT << GEN8_VCS2_IRQ_SHIFT;
@@ -2936,7 +2936,8 @@ int intel_init_blt_ring_buffer(struct drm_device *dev)
ring->write_tail = ring_write_tail;
ring->flush = gen6_ring_flush;
ring->add_request = gen6_add_request;
- ring->get_seqno = gen6_ring_get_seqno;
+ ring->seqno_barrier = gen6_seqno_barrier;
+ ring->get_seqno = ring_get_seqno;
ring->set_seqno = ring_set_seqno;
if (INTEL_INFO(dev)->gen >= 8) {
ring->irq_enable_mask =
@@ -2993,7 +2994,8 @@ int intel_init_vebox_ring_buffer(struct drm_device *dev)
ring->write_tail = ring_write_tail;
ring->flush = gen6_ring_flush;
ring->add_request = gen6_add_request;
- ring->get_seqno = gen6_ring_get_seqno;
+ ring->seqno_barrier = gen6_seqno_barrier;
+ ring->get_seqno = ring_get_seqno;
ring->set_seqno = ring_set_seqno;
if (INTEL_INFO(dev)->gen >= 8) {
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 49b5bded2767..af66119ecca9 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -193,8 +193,8 @@ struct intel_engine_cs {
* seen value is good enough. Note that the seqno will always be
* monotonic, even if not coherent.
*/
- u32 (*get_seqno)(struct intel_engine_cs *ring,
- bool lazy_coherency);
+ void (*seqno_barrier)(struct intel_engine_cs *ring);
+ u32 (*get_seqno)(struct intel_engine_cs *ring);
void (*set_seqno)(struct intel_engine_cs *ring,
u32 seqno);
int (*dispatch_execbuffer)(struct drm_i915_gem_request *req,
--
2.6.2
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